## Geometry Formulas

##### Created by:

kueserk  on March 5, 2009

##### Description:

Review for 7th grade math state assessment.

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Last Message: 26 months ago
mathmad2008 : Perimeter of any shape:
mathmad2008 : a[1]+a[2]+a[3]...+a[n] where n is number of sides
Orange265 : You could also do for area of a trapezoid: A= (b1+b2)h/2

# Geometry Formulas

 A = l x wArea of a rectangle
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#### Definitions

A = l x w Area of a rectangle
A = side squared Area of a square
A = 1/2 b x h Area of a triangle
A = b x h Area of a parallelogram
A = pi x radius squared Area of a circle
A = (base 1 + base 2)/2 x h Area of a trapezoid
Add all sides Perimeter of any shape
180 degrees All the interior angles of a triangle
360 degrees All the interior angles of a quadrilateral
C = pi x diameter Circumference of a circle

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